Erectile Dysfunction

Erectile dysfunction (ED) is sexual dysfunction characterized by the inability to develop or maintain an erection of the penis during sexual performance.

A penile erection is the hydraulic effect of blood entering and being retained in sponge-like bodies within the penis. The process is often initiated as a result of sexual arousal, when signals are transmitted from the brain to nerves in the penis. Erectile dysfunction is indicated when an erection is difficult to produce. There are various circulatory causes, including alteration of the voltage-gated potassium channel, as in arsenic poisoning from drinking water. The most important organic causes are cardiovascular disease and diabetes, neurological problems (for example, trauma from prostatectomy surgery), hormonal insufficiencies (hypogonadism) and drug side effects.

Psychological impotence is where erection or penetration fails due to thoughts or feelings (psychological reasons) rather than physical impossibility; this is somewhat less frequent but often can be helped. Notably in psychological impotence, there is a strong response to placebo treatment. Erectile dysfunction, tied closely as it is about ideas of physical well being, can have severe psychological consequences.

Besides treating the underlying causes such as potassium deficiency or arsenic contamination of drinking water, the first line treatment of erectile dysfunction consists of a trial of PDE5 inhibitor drugs (the first of which was sildenafil or Viagra). In some cases, treatment can involve prostaglandin tablets in the urethra, injections into the penis, a penile prosthesis, a penis pump or vascular reconstructive surgery.

The Latin term impotentia coeundi describes simple inability to insert the penis into the vagina. It is now mostly replaced by more precise terms. The study of erectile dysfunction within medicine is covered by andrology, a sub-field within urology.

Read more about Erectile DysfunctionSigns and Symptoms, Causes, Pathophysiology, Diagnosis, Treatment, History, Research

Other articles related to "erectile dysfunction, erectile":

Erectile Dysfunction - Research
... Gene therapy Gene therapy is being developed that would allow for weeks or months long effect, supporting erections ... This gene therapy involves injection of a transfer gene, calcium-sensitive potassium channel (hMaxi-K), into the penis ...
Sulbutiamine - Therapeutic Uses - Erectile Dysfunction
... According to one recent study, sulbutiamine is effective for the treatment of psychogenic erectile dysfunction ... Twenty patients with psychogenic erectile dysfunction received sulbutiamine for thirty days ... After the treatment was over, erectile function improved in sixteen of the patients ...
Sexological Testing - Index - EDITS (Erectile Dysfunction Inventory of Treatment Satisfaction)
... EDITS - Erectile Dysfunction Inventory of Treatment Satisfaction A self-evaluation questionnaire on erectile dysfunction which is meant for male patients (13 items) and ...
Herbal Viagra
... Herbal viagra is a name that can be given to any herbal product advertised as treating erectile dysfunction ... sells sildenafil citrate, a drug that is used to treat erectile dysfunction ... has become a generic term for many people discussing drugs designed to treat erectile dysfunction ...
Sildenafil - History - Origins
... Pfizer therefore decided to market it for erectile dysfunction, rather than for angina ... The drug was patented in 1996, approved for use in erectile dysfunction by the United States Food and Drug Administration on March 27, 1998, becoming the first oral treatment approved to treat erectile ...